MasterFlow Vents - MasterFlow EmberShield

Master Flow® EmberShield® Closeable Soffit Vent

Helps prevent wildfire embers from being drawn into the attic

Extreme Weather and Wildfires

As extreme weather conditions around the country persist and the threat of wildfires continues to grow, more and more property owners are becoming susceptible to the loss of property due to wildfires.1 Airborne embers often pose one of the greatest threats to homes and properties in the vicinity of a wildfire because they can be carried by the wind and cause new wildfires to erupt.


EmberShield® Closeable Soffit Vents are manufactured with heavy-duty materials using the latest technology in manufacturing to provide a product of the highest quality and performance.

Features and Benefits

  • Maximum Protection...
    During wildfire conditions, homeowners or first responders can close the EmberShield® Closeable Soffit Vents, helping prevent dangerous embers from entering the attic.

  • Intelligent Design...
    The vent openings go from black to silver, identifying when the vents are fully closed.

  • Easy to Install...
    With just four screws (included). They can be installed in new construction or retrofit applications by removing existing soffit vents (up to 16” x 8” [406 mm x 203 mm]).

  • Simple to Operate...
    Vents slide open and closed with anything long enough to reach them (extension poles, broom handles, etc.).

  • Good Ventilator...
    Provides 56 sq. in. (36,131 mm2) of NFA for critical attic intake airflow when vent is open.2


  • 16.5” x 9” x 5/8”
    (419 mm x 229 mm x 15.9 mm)

  • Paintable Finish

  • 56 sq. in. (36,131 mm2) of NFA

  • Integral screen

1 GAF's limited product warranty does not cover damage caused by fire, including wildfire embers. See Master Flow® Ventilation Products Limited Warranty for complete coverage and restrictions.

2 Always have a balanced attic ventilation system. Balanced ventilation requires an equal amount of intake ventilation and exhaust ventilation. GAF recommends at minimum providing 1 square foot of net free ventilation for every 300 square feet of attic floor space. In no case should the amount of exhaust ventilation exceed the amount of intake ventilation. Always consult local building codes for other ventilation requirements.


All documents are U.S. English unless otherwise noted

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